Shoe-polishing machine.



C. F. BURKHART.

SHOE POLISHING MACHINE.

APPLICATION HLED SEPT. 19, 190s.

RENEWED DEC. 2l, l9l5.

Patented May 2, 1916.

SK PAN c. 1F. BURKHART."

SHOE POLISHIN'G MACHINE.

APPLICATION FILED SEPT'. I9. ISGS-,RENEWED DEC. ZI, I9I5. y Y

Patented May 2,1916.

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C. F. BURKHART.

SHOE POLISHING MACHINE.

APPLICATION HLED-SEPT. 19. 1906.

RENEWED DEC. 2l, 1915.

`Patelnrel May 2, 1916.

sHEE 3.

16 SHEETS* C. F. BUHKIMRT.v

SHOE POLISHING MACHINE.

APPLICATION FILED sEPT.19.ily9'o6. RENEWED nEc. 21, |915.

Patented May 2, 1916.

16 -SHEETS-SHEET 4.

C. F. BURKHART.

SHOE POLISHINGIVIACHINE. l

APPLlcATIoN man sEPT.19.19o. nENEwED DEC. 21. |915.

Patented May 2, 1916.

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c. F. BURKHART.

SHOE POLISHING MACHINE.

APPLICATION FILED SEPT. I9, IQOBNRENEWED DEC. 21, I9I5.`

Patented Way 2, 1916.

I6 SHEETS-SHEET 6.

C. F. BURKHART.

SHOE POLISHING MACHINE.

lAPPLlcMloN man sEPT.19,1906.

RENEWED DEC. 2|. |915.

Patented May 2, 1916.

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lutend May 2, 1916.

1,6 SHEETS-SHEET 8.

C. F. BURKHART.

SHOE POLISHING MACHINE.

APPLICATIONHLEDSEPT.19,1906. RENEwED DEc.21,19|5.

Patented May 2, 1916.

I6 SHEETS*SHEET 9.

CQF. BURKHART.

SHOE POLISHING MACHINE.

APPLICATION man sEPT.19,1906.-11ENEwED 11121:.21, 1915.

34D Patented May 2, 1916- I6 SHEETS-SHEET I0.

XM/m7 C. F. BURKHART.

SHOE POLISHING MACHINE.

APPLICATION FILED SEPT. I9. 1905. HENEWED DEC. 2l, I9I5. Mmm.,

flatenfed Muy 2, 1916.

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SHOE POLISHING MACHINE. APPLlcATloN'FILED SEPT, M1906. RENEWED Dec.21,1915.

Putenfed May 2,1916.

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C. F. BURKHAHT. sHoE PoLIsHING MACHINE.

APPLICATION FILED SEPT. I9. 1906. RENEWED DEC. `2II I9I5.

Patented May 2, 1916.

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APPLICATION FILED SEPT. 1 9. 1906- RENEWED DEC. 2l, |915.

Patented May 2, 1916.

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C. F. BURKHART.

SHOE POLISHING MACHINE.

APPLICATION FILED sEPT.19.19o6. 11E11EwED`DEc.21,1915.

Patented Muy 2, 1916.

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Swoon l'oz l entes F. BU

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1iRT, OF BUFFALO, NEW `5ZOI|3LK,` ASSIG-NOR, BY MESNE AS'SIG-N- TO BURKHART CORPORATION, OF BUFFALO,

NEW YORK, A CORPOTION .sHoE-roLisHrne CINEN" i ringt- Specication of Letters Patent.

K Patented May 2, 1916.

Application led September 19, 1906, Serial No. 335,310. Renewed December 21, 1915. ASerial No. 68,100.

To all whom t may concern:

-lBe it known that ll, CHARLES F. BURK- .HAmg a citizenI of the United States, residing at Buffalo, in the county vof Frle and 5 State of New York, have invented certain new `.and useful Improvements in Shoe'- Polishing Machines; and I do herebyde- -clare the. following to be a full, clear, and eXa'ct description of the invention, such as will enable others skilled in the art to which it appert'ains to make and use the same.

This invention relates to improvements in shoe polishing machines, and particularly to such as are entirely `automatic in operation.

- constructions, combinations and arrangements of parts as will be hereinafter fully described and particularly pointed Vout in the claims.

. Serial Number 365294: has been divided and filed March 29, 1907 ,limited to the blacking' ing omitted, the main carriage being vindicated in the position immediately after starting on lits fourth rearward stroke. Fig.

I e-isan'enlarged, detail, fragmentaryview,

,partly in section and partly in elevation,in dicatin-g th'e heel carriage, lockl and operating parts. Fig.f5 is a longitudinal, horizontal section taken on the plane indicated by .45 line 5%-5 of Fig. 2l Fig. 6 is a transverse,

vertical section taken on the :plane indlcated e by line 6'- 6 of Fig. 2/- theparts being shown on an enlarged scale, and parts being omit- "ted for the ASake -of clearnes's. Fig. 7- is a transverse,l vertical section taken on the plane' indicated by line 77 of Fig. 2.l Fig. 8 is a fragmentary, vertical section taken on the plane indicated by line 8-8`of Fig. 6,

The invention .comprises certain. novell From the present application, application Fig. 3 is a similar view taken on the same plane, the same parts bef" the main carriage driving mechanism being fully shown. Fig.9 is an enlarged, detail, fragmentary sectional view of the connection between the niain carriage and the driving sprocket chain therefor. Fig. 10 is` a horizontal section taken on the plane indi-l cated by line 10-10 of Fig. 8. Fig. 11 is an enlarged, fragmentary, sectional plan view Fig. 16 is a detail, perspective view of a set of swinging'arms. Fig. 17 is a transverse', vertical section taken on the plane indicated by line 17-17 of Fig. 5, and illustrates on an enlarged scale thevheel brush operating mechanism.`l Fig. 18, is a detail, horizontal lsection taken on the` plane indicated by line .18-18 of Fig. 7 Fig. 19 is an enlarged, detail, 'sectional view taken on the plane indi- `cated by line 19--19 of Fig. 11, and illustrating in detail the ratchet operating lever for the blacking spray governing mechamsm. Fig. 20 1s an'edge view of the lower villustrated inthe condition of operation. y

end of the said ratchet lever. Fig. 21 is an enlarged, detail, sectional view, taken 'on the plane indicated by line21-21 of Fig.

11, the main` brush frame locking lever being seen in detail. Fig. 22 is an enlarged, detail, vertical', central section of ,one` of the sliding blocks for the revolving side brushes. Fig. 23 is a perspective vieur of said block, the bearing being omitted. Fig. 24 is an en i larged, detail, perspective view of the bearing detached. Fig. V25 is a fragmentary view in front elevation of that part of the main brush carrying frame provided with one set of toe brushes. Fig. 26 is a side elevation of vthe same. Fig. 27 is )a detail, fragmentary end view of the frame seen `in Fig. 25, the view being taken from the plane indicated by line 2,7-27 of Fig. 25. Fig. 28 is a horizontal section taken on the planeindicated' by line v28---28 of Fig. 27 Fig. 29 is an enlarged, detail, central, vertical section of one of the toe brushes taken on the plane indi-A cated by line 29-29 of Fig. 25. Fig. 30 is a vi'ew in front elevation of the main toe brush frame: Fig. 31 is a vertical, central section therethrough `taken on the plane indicated by line 31-31 of Fig. 30. Fig. 32

is an enlarged, detail, perspective view of one of the swinging bearings detached.4

In carrying out the preferred embodiment tails of constructiomso as to be inaccessible to unauthorized persons. .The casing is provided with a suitable aperture for the insertion of the shoe, and any preferred controlling mechanism may be provlded for governing' the starting of the present im@ proved blacking machine. Within the said casing is arranged a main or toe carriage which is mounted to reciprocate within the casing in front of the inserted shoe, and an auxiliary or heel carriage which is mounted to reciprocate'within thecasing in the rear of the shoe. Ay main or toe brush frame is mounted upon the main carriage and arranged to revolve vertically thereon for presenting diferent brushes to the toe and side portions of the shoe. A heel brush 1s mounted upon the heel brush frameand is arranged to reciprocate transversely of the longitudinal axis of the shoe, means being provided forcausing the heel brush to api proach the 'shoe and recede from the same in proper timed relationto the movement of the main carriage. Suitable devices are provided ,for supplying highly attenuated blacking to the shoe at the proper tlme relative to the movement of the main carriage so that theintroduced shoe will be brushed,

, blackened, and polished through the operation of the several coperating elements arrangedwithin the casing without interruption or aid-.from the .party whose shoe is beingl polished. all of the parts being enti-rely automatic in their operation and stopping afterl the .performance of their `respective functions without the .aid of an attendant, the only requirement for causing the machine to perform its entire functions being the starting of the same. Wherefore it will be observed that the mechanism ar- 'ranged within the casing is admirably vadapted for being controlled by some form fixed to the carriage. The carriage is arranged within the casing.2 and is formed to reciprocate upon the tracks 3,.

'Power shafts 7 and 8 are arranged parallel to each other within the casing 2 and extend throughout the length thereof. Said power shafts are journaled at their ends in suitable bearing blocks mounted upon the Hoor 1, and at its rear end the shaft 8 is provided with a set of bearing blocks 9-9 spaced a relatively short distance apart, and a pinion 10 is fixed to the shaft between said be'aring blocks 9. The bearing blocks 9 extend above. the journal of shaft 8 and form bearings for the journals Aof a stub 'shaft carrying a pinion 11 meshing with pinionl 10, thesaid stub shaft being provided with a sprocket wheel 12 aboutwhich is passed a driving sprocket chain 13. The chain 13 preferably receives power froman electric motor 14, but, of course, may re. ceive power from any suitable source. A sprocket wheel 15 is carried by the abovementioned stub shaft iny the rear of the `sprocket 12 and is engaged by a sprocket chain 151which is passed about a sprocket 15 xed to the shaft 7. Thus it will be observed that when the motor 14 is in operation the' shafts 7 and 8 will be continuously driven.

As it is necessary, for purposes'hereinafter specified. to have the carriage 4 reciprocate longitudinally within the casing 2, I provide mechanism for producing this operation, as best seen in'Figs. 8, 9 and 10. A bearing stand 16 is secured to and extends upwardly from the Hoor 1, said stand being hollow, as clearly seen in Fig. 8, and provided with bearing sleeves 17-17 in which is iournaled a .shaft carrying a worm 18, said shaft being provided with a sprocket wheel 19 connected by a sprocket chain 20 to a. suitable sprocket on. thel shaft 7. The stand 16 is 'provided with bearing sleeves 2.121 above and at right anglesao the sleeves 17, anda shaft is journaled' in said sleeves 21 and carries a worm gear 22 which meshes with lthew'orm 18. The outer ends. of the shaft carrying the worm gear 22 are 'marcela v space therebetween, and the inner end of the y stub shafts carried by` the said stands are provided with sprocket wheels27. Sprocket chains 28-28, are passed about the sprocket wheels 27 and extend forwardly to and pass about the sprocketwheels 29 carried by stub shafts 30-30 journaled in bearing stands l5 31-31, fixed to and extending upwardly from the loor'l. While I vhave mentioned sprocket -chains and sprocket wheels, it is obvious that any other form of belting may be .employed as'desired.V A bracket 32 depends from the body portionv'of the carriage 4 and is formed with a vertical slot 33,

. through which extends a `shaft 34. The shaft 34 is preferably provided with a ro- I but, of course, may be connected with theV link in any preferred manner.

tatably mounted spool 35 arranged within the slot 33 and provided at its ends with annularflanges which retain the spool in place,

the spool serving to largely eliminate friction. As clearly seen in Fig. 9, one of the links 0f each of the chains 28 is provided with an outwardly projecting pin 36-which isl preferably formed integral with the' link,

pins 36 projects through the contiguous end of the shaft 34, and is firmly secured against removal by a suitable cotter 37 which ispassed through-the end of the pin projecting beyond the shaft. Thus itwill be observed that as the chains 28 travelthe shaft 34 must of necessity accompany the same, and.

the carriage 4 will thus be caused to recipr cate according to'the'travel of the chains 2 the space between the'chains being sufficient to accommodate the bracket 32 and the depending flange of the carriage 4 being cut away or notched at its rear end,` as at 38, for

permitting the carriage to travel without interfering with the operation of the sprocket chains.- lt is, of course, obvious that the shaft 34 will rise within the slot 33 as the links carrying pins 36 pass about the sprockets 27, and the shaft 34 will, drop within the slot 33 as the links carrying pins 36 pass about the sprockets 29.

lNearthe-forward end of the casing 2 the same is provided with an opening 39 through which the shoe to be polished is designed to be introduced, and a foot-rest 40 is arranged Abeneath and slightly in the rear of the opening 39 for facilitating the retention of the foot in proper relation to the parts of the'machine. 'llhe foot-rest 40 is tti supported upon a stand 41 which rises from the Hoor l, and as seen lin Fig. 13,- extends through a longitudinal `slot 42 1n the carlEach of thev lriage 4, the stand 41 being relativelythin and the slot therefor being comparatively narrow. lt is, of course, obviousthat the slot 42 is of a length corresponding to the distance traveled during one movement of the carriage 4. 'llhe slot 42 is, as seen in Fig. 13," arranged longitudinally, centrally,

of the carriage, an'd,'of course, 'the foot-rest 4() bears the same relation to the carriage.

Near the forward end of the carriage and on opposite v sides thereof are arranged brushes 43. Only one brush 43 is illustrated at each side, but,l of course, it is obvious that any desired number may be provided. Each of said brushes is preferably in the Aform ofv a frustum of a cone, but may be cylindrical if preferred, and each is carriedv by a shaft 44 journaled in a bearing sleeve 45. lEach.

bearing sleeve45 is formed with laterall projecting trunnions 46 journaled in a sli ing block or frame 47, the said frame or block being mounted to slide laterally on guideways 48 formed of or connected with thefcarriage 4, the carriage being formed with transverse slots .49 for accommodating the blocks 47 A As best seen inFigs. 22and 23, each of the blocks 47 is formed at4 each side with longitudinal` groovesk 50y designed to inclose the guideways 48.I Thus-fthe blocks 47 are formed to reciprocate transversely of the carriage 4, and in order to normally maintain the said blocks at the inner extreme of their movement, a spring 51 is interposed between the respective block' and a bracket 52 secured to the respective side of the carriage 4. Each4 block 47 is preferably formed with a boss 53 at the point of contact of the spring 51, and a guiding pin 54 is preferably fixed tothe ybracket -52 and projects toward the boss so 'as to guide the spring l51 and prevent the same from becoming displaced, the inner end of the spring extending into a recess formed longitudinally in the boss 53. As clearlyI seen in Fig. 7,

each shaft 44 extends below the bearingl sleevey 45 and carries at vits lower .end a .i

j beveled gear 55 meshing with a correspond-z ing gear 56. rlhe gears 56 are carried respectively by the powerv lshafts 7 and 8. The gears 56 are, ofcourse, splined on their respective shafts and are causedto travel with the carriage 4 by means of a sleeve 57 surrounding the respective power shaft and connected by anr arm 58 with a sleeve 59 surrounding thel corresponding shaft' 44 above the gear wheel 55.' It is tobe ob-l served that the sleeve 57 engages the re# spective, gear 56 on one side and the beveled gear 55 engages the oppositey side of the 1?-- gear 56 so that gear 56 must travel with the carriage which supports Vthe respectivev shaft 44.l X'lhus it will be'seen that regardless of the position of shafts 44 with-iirxespect to, the stationarypajrtsjof the meeil'ranism as well as with respect to the carriage, the brushes 43 will be Vrotated as long as the power shafts are being driven. It is further to be observed that the sleeves 45 permit freelateral oscillation ofthe shafts 44 so that when .the blocks 47 are thrustJ apart or outwardly and the brushes 45 are swung through arcs of circles struck from the 1ongitudinal axes of the power shaft as centers, the gears '55 will simply walk about the gear 56 and the brushes 43 will swing freely while continuing to rotate.

- j-ournaled vertically'in the carriage 4, and

at their upper ends carry cams 6'1-61.

The'lower ends ofthe shafts 60 carry star wheels 62, as seen in detail in Fig. 18. Each.

of the star wheels 62 is provided with four points adapted to `be successively engaged by operating pawls 63- -,63 for rotating the p'awls, 63 are pivotally mounted uponbrackets 64-64 xed to the stand 41 of the footrest 40. Each of the pawls 63 is formed with a flat face 63 adapted to engage the stand 41 vfor prevent-v ing the pawl 63 fromswinging rearwardly beyond a position at right angles to the 'longitudinal axis ofthe carriage 4. In order to normally "maintain the fiat faces 63 of the pawls 63 iniengagement with the stand 41, suitable springs 65 'are arranged to engage the pawls and press'thesame rearwardly. The'springs 65 arel preferably formed of a single strlp of spring material attached intefmediate 'its length to the stand 41, and yhaving its ends bent into suitable shape 'for engaging the ypawls 63 under 'spring pressure. On the forward movement of thecarriage the star wheels will pass the pawls 63 *and cause the same to swing forwardly, vthe pressure of the spring 65, not being sufficient for producing rotation of thevstar wheels. It will be observed,

however, that y"as" the carriage 4 moves rearwardly one of the points of each star. wheel 62 will engage the respective pawl 63, which pawl remains immovable during the rearward movement of the carriage soathat the star wheel is givena one-quarter rotation. Thus at eachfreciprocation of the carriage the star wheels will be given one rforwa'rd step amounting to one-quarter rotation, and,

:,. of, course,the cams 6 1 will be correspond- 1i-ugly rotated-until, when the final polishingy operation is to be performed on the front portion of the shoe, the longest portion of the cams 61 will engage the sliding blocks 47 and will retain the same in their outermost positions with the brushes 43 out of contact with the shoe.

It is to be observed that thel elongated portions of the cam are abrupt so that a single stroke of the star wheel will produce the lateral thrust of the respective block 47 and the next stroke of the star wheel will release the block and permit it to return to its normal,` inner position. This insures the operation of the brushes upon the next shoe after the polished shoe has been removed. It is to be noted that the stroke of the stan wheels 62 whichproduces the movement of the cams v61 occasloning theoutward lthrust of the blocks 47 occurs as the carriage 4 is making its final receding movement, and as the pawls 63 are located approximately cen- -trally of the footrest 40 the brushes 43 will be thrown laterally away from the shoe at a point substantially centrally thereof. The said brushes will be held in this outward position until the .carriage 4 makes the vfirst forward stroke of the 'next polishing operation, the brushes remaining in their outward position until Ythe 'carriage has moved the full distance forwardly andreturned to the point at which the star wheels 62 are again aol engaged by the pawls 63 and the cams 61 are caused to move out of engagement with the 'slide blocks 47, so that the brushes 43 will first engage the shoe approximately centrally thereof on the first rearward stroke of the carriage.

Approximately at the rear end ofthe carriage 4, the same is provided with a vertical .standard 66 formedat its upper end with an elongated journal bearing67 in which is journaled a shaft. 68, the upper end of the standard 66 beingbifurcated and a sprocket wheel 69 being fixed to the shaft 68 between the arms of the bifurcation. A driving `chain 70 connects the sprocket 69 with a 8. The sprocket wheel 71 is caused to travel with carriage 4 by means of brackets 71 depending from the carriage and extending on opposite sides of said sprocket wheel. By preference, each bracket 71 is formed at its outer end with a sleeve slidingly inclosing shaft 8.

` The forward end of the bearing 67 terminates in a projecting sleeve bearing 72,upon

which is journaled a main or toe brush frame 73. The vframe 73, as best seen in Figs. 6, 30 and 31, consists, lof a sleeve 74 journaled on the sleeve bearing 72, and provided with forwardly projecting arms 75- 7 5, each p'iovided at its end with a sleeve 76, the sleeves 76 being connected by a rectangular framing 77, which framing is referably formed integral with the sleeves 7,6. From the rectangular frame 77 project four sub- Y sprocketwheel 71 splined on thc power shaft 

